Schwinn 12in Tiger Owner's Manual page 63

Problem
Gear shifts not working properly
Slipping chain
Chain jumping off freewheel
sprocket or chainring
Constant clicking noises when pedaling
Possible Cause
• Derailleur cables sticking/
stretched/damaged
• Front or rear derailleur
not adjusted properly
• Indexed shifting not adjusted properly
• Excessively worn/chipped chainring
or freewheel sprocket teeth
• Chain worn/stretched
• Stiff link in chain
• Non compatible chain/
chainring/freewheel
• Chainring out of true
• Chainring loose
• Chainring teeth bent or broken
• Rear or front derailleur side-to-side
travel out adjustment
• Cross chaining and shifting under load
• Stiff chain link
• Loose pedal axle/bearing
• Loose bottom bracket axle/bearings
• Bent bottom bracket or pedal axle
• Loose crankset
Remedy
• Lubricate/tighten/replace cables
• Adjust derailleurs
• Adjust indexing
• Replace chainring,
sprockets and chain
• Replace chain
• Lubricate or replace link
• Seek advise at a bicycle shop
• Re-true if possible, or replace
• Tighten mounting bolts
• Repair or replace chainring/set
• Adjust derailleur travel
• Lubricate chain/adjust chain link
• Adjust bearings/axle nut
• Adjust bottom bracket
• Replace bottom bracket axle or pedals
• Tighten crank bolts
©2010
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